[ Plumbing ]
Fixture counts are the easy part. The bid moves on medical gas, site utility boundaries, and insulation nobody claimed.
Plumbing scope ends where civil begins, and the line moves from job to job. Certification requirements and specialty systems sit in specification sections the fixture schedule never references.
The whole package, opened out.
Every document that governs a plumbing bid, and the ones that hide something.
- 00 21 13Instructions to bidders
- 01 11 00Summary of workMandatory site visit
- 22 07 00Plumbing insulationCounted twice
- 22 11 00Water distributionScope boundary
- 22 62 00Medical gas systemsCertification
- P-101Floor plans
- P-601Fixture scheduleTrim package
- C-201Site utilitiesScope boundary
- ADD-01Addendum 1
9 documents in this plumbing package. 6 of them carry something that changes the number, and only one of those is a drawing.
Read the document, not the summary.
One extract from the plumbing documents, at the scale an estimator reads it.
What it catches in plumbing.
Each one cited to the document and page that proves it, so an estimator can verify it, price it, and approve the move.
- Site utility boundary movesSpec 22 11 00 §1.2 · civil C-201
Building scope terminates five feet out on the drawings and at the property line in the specification. The difference is trench, pipe, and backfill.
SCOPE GAP - Medical gas certification unpricedSpec 22 62 00
Installer, brazer, and verifier certifications are required by section and absent from the invitation scope list. Verification is a third-party cost.
ADDED COST - Fixture schedule outruns the specDrawing P-601 · spec 22 42 00
The schedule specifies a carrier and trim package the section does not list. The vendor quote follows the section.
SCOPE GAP - Insulation assigned in two placesSpec 22 07 00 / 23 07 00
Domestic water insulation appears under both mechanical and plumbing. One of them is double-counted and one is missing.
SPLIT SCOPE
Illustrative of the conditions this trade bids. Named pursuits, companies, and prices across this site are fictional.
Sector changes the clauses.
The same trade prices very differently depending on what is being built.
HealthcareMedical gas, certification chains, and infection-control constraints on every phase.
LaboratoriesAcid waste, specialty piping, and neutralization written outside the fixture schedule.
MultifamilyRepetitive stacks where one wrong assumption multiplies by the unit count.
EducationFixture-count code compliance checked against an occupancy that changed by addendum.
IndustrialProcess waste and utility tie-ins scoped by narrative rather than drawing.
How ArosBid runs it.
ArosBid reads every specification section that touches your scope, not just the ones in the invitation email, and cites the page that proves each one.
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